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Anterior Abdominal Wall Hernias: Findings in Barium Studies¹

¹ From the Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104. Received July 7, 2005; revision requested September 7 and received September 21; accepted September 22. All authors have no financial relationships to disclose. Address correspondence to M.S.L. (e-mail: marc.levine{at}uphs.upenn.edu).

Findings of anterior abdominal wall hernias at computed tomography and magnetic resonance imaging are well documented; however, little information is available about the depiction and characterization of such hernias in barium studies, primarily in small-bowel follow-through examinations. Such examinations are performed frequently, and radiologists should be familiar with the hernia features that may be observed. Anterior abdominal wall hernias are best recognized in profile on lateral spot images from a small-bowel follow-through study when one or more loops of bowel extend beyond the fascial planes of the anterior abdominal wall, with luminal narrowing at the entry or exit site of the hernia or at both sites. In some patients, the hernia also can be recognized indirectly on a frontal view because of the displacement and, often, extrinsic compression or deformity of herniated bowel loops. In such cases, additional views should be obtained with the patient in the lateral position to confirm the presence of the hernia with direct visualization of the herniated loops in profile. The reducibility of bowel from an anterior abdominal wall hernia also can be assessed with manual palpation of the abdominal wall while the patient is in the lateral position. Manual palpation performed during fluoroscopy helps determine whether the bowel loops can be returned to the proper location or are fixed in the hernia, an important observation because of the higher risk of obstruction or strangulation when the bowel is incarcerated. Fluoroscopy therefore is a useful technique for the detection and characterization of anterior abdominal wall hernias in barium studies.

© RSNA, 2006

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